Paint or varnish remover.



" n .s'rA'rEs cannnron ELLIS, or ngncnmonr, NEW roux, Assreiwon '10 CHADELOID cimmrcan comm, NEW YORK, N. Y., A CORPORATION OF WEST VIRGINIA.

IPAINT OB VARNISH REMOVER.

110 Drawing,

To all 'whom it mag} concern:

Be it known that I, CARLEr'oN ELLIS, a citizen of the United States; and now residing at Larchmont, in the county of Westchester and State of New York, have made certain new and useful Inventions Relating to Paint or Varnish Removers, of which the following is a specification.

tion and loosening of the'paint film. Such acid agents are preferably readily volatile.

so as to evaporate from the wood or other surface after acting on the finish or the agents should have such character as not to undesirably affect subsequent coats of finish applied to the surfaces. Such acid agents are, of course, preferably free from any undesirable staining or coloring action on wood surfaces or undue corrosive or poisonous action on the hands of the operator while decomposing carbonate pigments, that is, chemically combining therewith and replacing the carbon dioxid in white lead, for instance. I

A number of organic acids of the aliphatic series are desirablefor such purposes, such, for instancefas formic, acetic, propionic "and butyric acids among the mono basic saturated acids. .Lactic acid, preferably used in' an approximately. anhydrous condition, is anexample of a desirable acid agent in the hydro group of acids. Ethyl sulfuric acid may a o be used havin a desirable decomposing or solvent actlon' on lead and barium paint pigments, for example. In the aromatic group. various sulfonic acids are desirable, such, for instance, as phenyl sulfonic acid and the related sulfinic acid agents. Benzoic and salicylic acids while solid at ordinary temperatures are noncorrosive. acids, sufficiently akin to the variousresins so as not to have undesirable action upon them in finish coats sub sequently applied, to the surface. Other desirable acid agents are hydrochloric and sulfurous acid gas which may be con-' ture by allowihg the desired gas to percolate through a considerable body of the mixture at comparatively low temperature, that is, preferably below 20 C. for suficient time to effect the absorption of the desired proportion of the acid agent. Formost purposes'a few per cent. by weight of such gaseous acid Specification of Letters Patent. g Patgntfl J l 27 1915 Application filed February 26, 1907. Serial No. 359,509. i

agents is suflicient to have the desired .ac-

tion. Oneor more of such acid agents inay be used in removers in connection with suitable loosening finish solvent material, that is, solvent material of a generally alcoholic character. or action in removers, such, for example, as methyl, ethyl, amyl and denatured alcohol, acetone, methyl acetone, methyl ethyl ketone, oil of acetone, pinaco line, light oil of hard wood tar, butyrone and allied solvents. Penetrating finish solvent material may also be used, that is, solvent. material of a generally benzo'lic character or action in removers, such as benzol, toluol, xylol, cumene,benzin and various other petroleum hydrocarbons, carbon-bisulfid, carbon tetrachlorid and other chlorinated hydrocarbons, such as chlor benzol, also methyl, ethyl, amyl and other ethers, and methyl, ethyl and amyl acetates and other este'ric compounds.

Although not necessary in all cases, various stiflening material may be used, such as wood'flour, starch, whiting, infusorial earth and also film-forming material of this character, such as soapy or waxy bodies, nitro cellulose and other solid organic bodies having the property of forming an evaporation retarding film over the surface of the remover when in use. All the ingredients are preferably thoroughly incorporated by agi- An illustrative remover of this character may comprise methyl acetone 30 parts, ben- 201 25 parts, glacial acetic acid 4: parts, ceresin wax 1 part. I

Another illustrative remover may comprise denatured alcohol 45 parts, oil of acetone 15 parts, benzin 5 parts, with which i part of ceresin or paraflin wax may be incorporated, and thenthe mixture im- I} pregnated with a few per cent. of'hydro- "chloric acid gas. Illustrative removers suitable for dippingor tank work may comprise amyl alcohol-15 parts, light kerosene 10 parts, pinacolin 20 parts and formic acid 5 parts, or according to another formula, denatured alcohol 40 parts; methylethylketone 25 parts, glacial acetic acid 6 parts and ceresin wax 4 part, although the stifiening material may, of course, be omitted when desired.

Having described this invention in connection with a number of illustrative ingredients and formulas, to the details of which disclosure it is not, of course, to be limited, What is claimed as new and what is desired to be secured by Letters Patent is set 'forth in the appended claims.

1. The paint or varnish remover comprising approximately methyl acetone parts, benzol 25 parts, glacial acetic acid 4 parts and Wax 1 part.

2. The paint or varnish remover comprising approximately methyl acetone 30 parts, benzol 25 parts, glacial acetic acid 4 parts and Waxy stiffening material.

3. The paint or varnish remover comprising approximately methyl acetone 30 parts, benzol 25 parts, a volatile carbonate decomposing organic acid 4 parts and stiffening material.

4. The paint or varnish remover comprising substantially equal parts of penetrating solvent material and methyl" acetone with which a small proportion of volatile carbonate decomposing organic acid and waxy stifl'ening material have been incorporated.

5. The paint or varnish remover compris ing substantially equal parts of penetrating solvent material, methyl acetone and a small proportion of incorporated substantially volatile carbonate decomposing material.

6. The paint or varnish remover comprising approximately methyl acetone 30 parts,

benzol 25. parts, and glacial acetic acid 4 parts.

7. The paint or varnish remover comprising approximately methyl acetone 30 parts, benzol;25 parts, and a volatile carbonate decomposing acid 4 parts.

8. The paint or varnish remover comprising composite volatile finish softening material, including methyl acetone and a small proportion of incorporated glacial acetic acid capable of decomposing carbonate paint pigments.

I CARLETON ELLIS. Witnesses! HARRY L. DUNCAN,

JEssIE B. KAY. 

